WO2011049387A2 - Corps à noyau creux de forme annulaire, dalle à noyau creux bidirectionnelle l'utilisant, et leur procédé de construction - Google Patents

Corps à noyau creux de forme annulaire, dalle à noyau creux bidirectionnelle l'utilisant, et leur procédé de construction Download PDF

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Publication number
WO2011049387A2
WO2011049387A2 PCT/KR2010/007237 KR2010007237W WO2011049387A2 WO 2011049387 A2 WO2011049387 A2 WO 2011049387A2 KR 2010007237 W KR2010007237 W KR 2010007237W WO 2011049387 A2 WO2011049387 A2 WO 2011049387A2
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WO
WIPO (PCT)
Prior art keywords
slab
reinforcing
hollow
horizontal
donut
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PCT/KR2010/007237
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English (en)
Korean (ko)
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WO2011049387A3 (fr
Inventor
이승창
오정근
최창식
최현기
Original Assignee
삼성물산 주식회사
한양대학교산학협력단
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Application filed by 삼성물산 주식회사, 한양대학교산학협력단 filed Critical 삼성물산 주식회사
Priority to US13/581,597 priority Critical patent/US20130036693A1/en
Priority to SG2012061750A priority patent/SG185352A1/en
Publication of WO2011049387A2 publication Critical patent/WO2011049387A2/fr
Publication of WO2011049387A3 publication Critical patent/WO2011049387A3/fr

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
    • E04B5/328—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements the filling elements being spherical
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction

Definitions

  • the present invention relates to a lightweight two-way hollow slab, in which a hollow body is disposed in a matrix form along a transverse and longitudinal direction between upper and lower reinforcing slabs and embedded in slab concrete to exhibit two-way resistance characteristics.
  • the present invention relates to a donut-like hollow forming body which can be advantageously used in a two-way hollow slab, a two-way hollow slab using such a donut-like hollow forming body, and a preferred method of constructing the two-way hollow slab.
  • Hollow core slab is a slab having a hollow core (hollow core) in the center, exhibits excellent cross-sectional performance compared to its own weight and has the advantage of reducing the interlayer noise.
  • One of the slab systems currently used in buildings in terms of weight reduction of the slab weight is a one-way hollow core slab. Since most of the slabs of building structures such as apartment houses exhibit two-way behavior, it is difficult to directly apply one-way hollow slabs without design changes and additional costs. In order to solve this problem, a two-way hollow slab was developed by a bubble deck company in the Netherlands and a Cobiax company in Switzerland using a spherical or ellipsoidal plastic ball as a hollow body.
  • the slab spheres exhibit two-way resistance characteristics as the ball-shaped hollow bodies are arranged in a large number of rows and embedded in the slab concrete.
  • the two-way hollow slab is integrally connected by a concrete part filled between the slab bottom in which the slab bottom reinforcement is embedded and the ball-shaped hollow forming body in which the slab upper reinforcement is embedded, thereby completing the slab sphere in two directions. Structure.
  • Such a two-way hollow slab needs special attention to fix the position of the hollow body.
  • the hollow ratio by the shape and volume of the hollow body in the two-way hollow slab determines the amount of concrete and self-weight reduction of the slab and on the other hand determines the structural performance of the slab spheres.
  • the higher the hollow ratio the smaller the amount of slab concrete, but the lower the structural strength of the slab.
  • the present invention has been developed in order to solve the problem of lowering the structural performance due to the increase of the hollow ratio in the conventional two-way hollow slab and to improve the workability as follows.
  • the present invention provides a donut-shaped hollow body formed as a member embedded in the concrete, the hollow portion is formed in the center having a donut-shaped shell as a whole.
  • the present invention is a two-way hollow slab completed by stably positioning the above-described donut-shaped hollow forming body in the slab concrete, by restraining the donut-shaped hollow forming body to the reinforcing cage or restraining the upper and lower reinforcement of the slab It provides a two-way hollow slab which is characterized in that the stable positioning inside the slab concrete.
  • the hollow body can be constructed as a hollow slab that ensures the construction quality while placing the hollow body in the center between the upper and lower bars of the slab.
  • the reinforcing cage can be constructed as a structurally advantageous hollow slab because it acts to fix the position of the hollow forming body, but also acts as a shear reinforcing bar restrained by the slab concrete.
  • the reinforcement of the slab reinforcement in the construction of the hollow slab can be simplified because the reinforcing bar of the slab upper and lower reinforcement to the reinforcing cage to the reinforcement spacer for fixing the position of the hollow forming body in advance.
  • FIG. 1 shows a conventional two-way hollow slab.
  • FIGS. 2 and 3 illustrate a toroidal hollow body according to the present invention.
  • FIG. 4 shows a two-way hollow slab completed using the toroidal hollow body of FIG. 2.
  • 5 to 7 illustrate a state in which the donut-shaped hollow forming body of FIG. 2 is restrained and installed in the reinforcing cage using the vent muscle and the reinforcing cage thereof.
  • FIG. 8 and 9 illustrate a process of constructing a two-way hollow slab using the reinforced cage of FIG. 7 and a cross section of the completed two-way hollow slab.
  • FIG. 10 and 11 illustrate a state in which the donut-shaped hollow forming body of FIG. 2 is restrained and installed in the reinforcing cage using the horizontal bar and the reinforcing cage thereof.
  • FIG. 12 and 13 illustrate a cross-section of a completed two-way hollow slab and a process of constructing a two-way hollow slab using the reinforcing cage of FIG. 11.
  • FIG. 14 and 15 illustrate a state where the donut-shaped hollow forming body of FIG. 3 is installed using a reinforcing spacer and the reinforcing spacer.
  • FIG. 16 shows a cross section of a two-way hollow slab completed using the reinforcing bar spacer of FIG. 14.
  • the donut hollow body according to the present invention is a member embedded in the concrete for the construction of a lightweight concrete member, the hollow portion of the circular cross section is formed in the center of the three-dimensional body and the edge is treated as a curved surface as a whole the doughnut-shaped outer shell It is characterized by having.
  • the reinforcing cage consisting of the first and second side vent roots, the upper vent roots and the first and second stage butts;
  • the donut-shaped hollow forming body which is installed in a state of being restrained inside the reinforcing cage by fitting grooves formed on each of the opposite sides, and is spaced apart in a plurality of rows;
  • a slab lower reinforcing bar under the reinforcing cage Characterized in that it comprises a ;; slab concrete to be cured in the thickness of the slab upper and lower reinforcement is embedded.
  • Another two-way hollow slab comprises: a reinforcing cage consisting of first and second upper and lower horizontal muscles, first and second side tilt muscles, upper horizontal muscles, and first and second stage butt roots;
  • the donut-shaped hollow forming body which is installed in a state of being restrained inside the reinforcing cage by fitting grooves formed on each of the opposite sides, and is spaced apart in a plurality of rows;
  • a slab lower reinforcing bar under the reinforcing cage Characterized in that it comprises a ;; slab concrete to be cured in the thickness of the slab upper and lower reinforcement is embedded.
  • Another two-way hollow slab according to the present invention, the donut-shaped hollow forming body spacingly arranged in a number of rows; A slab lower reinforcing bar reinforcement under the donut-shaped hollow forming body with a main bar and a reinforcement bar; A slab upper reinforcing bar reinforcement on the donut-shaped hollow forming body to the main and reinforcement; A reinforcing bar spacer disposed between the donut-shaped hollow former and the slab upper and lower reinforcing bars to be installed; Characterized in that it comprises a ;; slab concrete to be cured in the thickness of the slab upper and lower reinforcement is embedded.
  • Construction method of a two-way hollow slab according to the present invention, the step of reinforcing slab lower reinforcement; Disposing the reinforcing cage in the state where the donut-shaped hollow forming body is restrained on the slab lower reinforcing bars; Reinforcing the slab upper rebar on the reinforcing cage; It characterized in that it comprises a; step of curing the slab concrete.
  • the hollow body 100 is a member that is buried in the concrete so that the concrete is not filled in the installation space to complete the lightweight concrete member.
  • the hollow forming body 100 itself serves as a hollow core to impart light weight to the concrete member.
  • the present invention proposes a donut-shaped hollow body 100 having a hollow portion 110 formed at the center thereof and having a donut-shaped shell as a whole.
  • the donut-shaped hollow body 100 has a hollow portion 110 having a circular cross section at the center of a three-dimensional body and is treated with a curved surface to have an overall donut-shaped outer shell.
  • the donut-shaped hollow body 100 may be formed as a hollow hollow portion 120 in a donut-shaped shell, and may also be provided in a structure in which two or more component pieces 100a and 100b are assembled. have.
  • the cavity portion 120 serves to further add the lightness of the donut-shaped hollow body 100, and the assembly structure by the component angle pieces 100a and 100b overlaps each of the component pieces 100a and 100b. This makes it possible to minimize the volume during transportation.
  • the cavity 120 may be filled with soundproof / dustproof materials, such as foamed styrofoam, or rubber, and the like, and the donut-shaped hollow body 100 filled with heat-insulated / soundproof / dustproof materials is advantageously applied to a place where heat insulation or dustproofness is required. can do.
  • soundproof / dustproof materials such as foamed styrofoam, or rubber, and the like
  • the donut-shaped hollow body 100 filled with heat-insulated / soundproof / dustproof materials is advantageously applied to a place where heat insulation or dustproofness is required. can do.
  • FIG. 2 and FIG. 3 a donut-shaped hollow body 100 having a structure in which two component angle pieces 100a and 100b are assembled can be seen.
  • two stepped angle pieces 100a and 100b correspond to each other. It is a structure that is assembled by fitting by 131a, 131b
  • Figure 3 is a structure in which the two angular pieces (100a, 100b) is assembled by engaging by the protrusions 132a and the locking 132b corresponding to each other. to be.
  • the fitting grooves 140a, 140b, and 140c are formed in the outer shell of the donut-shaped hollow body 100, and the fitting grooves 140a, 140b, and 140c are donut-shaped hollow bodies ( It is a configuration provided to restrain the 100 to the reinforcing cage 200 or to bind to the reinforcing spacer (300).
  • an X-shaped fitting groove 140a is formed at a side surface and a straight fitting groove 140b and a trapezoidal fitting groove 140c are formed at upper and lower surfaces thereof. This can be confirmed, which is to universally use the donut-shaped hollow body 100 regardless of the type of the reinforcing cage 200 and the reinforcing spacer 300 proposed in the present invention.
  • the donut-shaped hollow body 100 according to the present invention may be made lighter than concrete in comparison with the same volume, and in consideration of the hollow body 100 being installed in place of concrete, it is an eco-friendly material instead of concrete that is difficult to recycle.
  • Hollow bodies of are preferable.
  • it is made of eco-friendly bioplastics such as biodegradable plastics or biomass plastics.
  • Biomass plastics are polymers that induce the reduction of fossil resources using renewable organic resources (PLA, natural fiber), and can be recognized to reduce CO 2 by the amount of biomass substitution.
  • the hollow body 100 may be made of plastic (PP, PE, etc.), in particular, the strength of the hollow body when the reinforced plastic (Glass Fiber, GF) added up to about 40% (tensile and Compression) can be increased by about 2-3 times or more.
  • a preferred hollow body 100 for constructing a two-way hollow slab the height (H) of the body is 120 ⁇ 150mm, the length (L1, L2) of the body is 90 ⁇ 270mm, hollow It is proposed that the diameter D of the part is 15 to 45 mm.
  • the height of the body considers the thickness of the hollow slab and the covering thickness of the slab upper and lower reinforcing bars, and the length of the body considers the hollow ratio of the slab (more than 30%), and the diameter of the hollow part is the filling of the slab concrete and the The hollow factor is taken into account.
  • the slab concrete 420 is disposed between the slab upper and lower reinforcing bars 411, 412, 413, and 414 with a donut-like hollow body 100 arranged in a sparse matrix in a plurality of rows. Completed in the form of being purchased in.
  • the two-way hollow slab is structurally stable because concrete portions can be formed at regular intervals regardless of the size of the donut-shaped hollow forming body 100.
  • the hollow part 110 is filled with concrete, it is confirmed that the rigidity of the hollow slab is increased and sagging is reduced, and the fracture is delayed as the cracks of the concrete are dispersed by the curved surface treatment.
  • the present invention proposes a position fixing method by the reinforcing cage 200 and the position fixing method by the reinforcement spacer (300).
  • 5 to 13 show a position fixing method by the reinforcing cage 200
  • Figures 14 to 16 show a position fixing method by the reinforcing spacer 300.
  • the reinforcing cage 200 and the reinforcing spacer 300 are proposed as a structure for stably positioning the slab upper and lower reinforcing bars 411, 412, 413, and 414 by controlling the mobility of the hollow body 100.
  • the steel cage 200 proposed for fixing the position of the hollow body 100 is manufactured by assembling reinforcing bars (materials corresponding to steel bars, such as steel wires), and the hollow body 100 inside. ) Is constrained to be installed. After the reinforced cage 200 is embedded in the slab concrete 420 is also restrained by the slab concrete 420 serves to compensate for the problem of reducing the shear performance due to the cross-sectional loss caused by the hollow body (100).
  • Reinforcing cage 200 of Figure 5 is the most basic form proposed to restrain one hollow forming body 100 therein, the reinforcing cage 200 of Figure 6 has two hollow forming body 100 therein
  • the reinforced cage of FIG. 5 is expanded twice
  • the reinforced cage 200 of FIG. 7 is the reinforced cage 200 of FIG. 5 to restrain the four hollow bodies 100 therein. Is expanded four times. Of course, it can be extended to various lengths based on the reinforced cage 200 of FIG.
  • the reinforcing cage 200 is formed by welding assembly of the first and second side vent roots 210 and 220, the upper vent root 230, and the first and second stage butt roots 241 and 242. It is composed.
  • the first side vent muscle 210 is divided into a first inclined portion 211 and a first horizontal portion 212 extending from both sides of the first inclined portion, and is inclined to be arranged to constitute the first side. do.
  • the second side vent muscle 220 is divided into a second inclined portion 221 and a second horizontal portion 222 connected to both sides of the second inclined portion 221 by bending the reinforcing bar, facing the first side vent root 210.
  • the second inclined portion 221 is positioned in a direction crossing with the first inclined portion 211 of the first side vent muscle. Is placed.
  • the upper vent muscle 230 is also divided into a third inclined portion 231 and a third horizontal portion 232 connected to both sides of the third inclined portion 231, and the upper vent root 230 is disposed to face each other.
  • the first and second side vent roots 210 and 220 are arranged horizontally on the upper part to form an upper surface, while each of the third horizontal parts 232 on both sides is arranged in the first and second sides of the first and second side vent roots. It is installed tightly with the horizontal portions 212 and 222.
  • the first end butyl root 241 is installed to incline the first horizontal portion 212 of one end of the first side vent root 210 and the second horizontal portion 222 of one end of the second side vent root 220. do.
  • the second end butyl root 242 is inclined to connect the first horizontal portion 212 of the other end of the first side vent root 210 and the second horizontal portion 222 of the other end of the second side vent root 220. Is installed.
  • Reinforcing cage 200 of Figures 6 and 7 is the form of the reinforcing cage of Figure 5 is extended, which is the first and second side vent (210, 220) and the upper vent (230) in the reinforcement trapezoidal shape It is realized by using a continuous bent.
  • the reinforced cage of FIG. 6 is provided with two first, second, and third inclined portions 211, 221, and 231, respectively, and both ends thereof are ended with the first, second, and third horizontal portions 212, 222, and 232.
  • the reinforcing cage of FIG. 7 is first, second and third inclined portions 211, 221, and 231, respectively.
  • first and second side vent roots 210 and 220 and the upper vent roots which are provided so that both ends thereof end with the first, second and third horizontal parts 212, 222, and 232, are completed.
  • the reinforcing cage 200 standard of FIG. 7 is suitable for application to a site.
  • the reinforcing cage 200 using the vent root may be self-supporting since its overall appearance has a three-dimensional structure of a cube. That is, the first and second side vent roots 210 and 220 constitute both sides of the hexahedron, the upper vent root 230 constitutes the upper surface of the hexahedron, and the first and second stage butt roots 241 and 242.
  • the front and rear surfaces of the hexahedron are formed, respectively, and the first and second horizontal parts 212 and 222 of the first and second side vent roots become support points to enable self-support.
  • the front and rear surfaces of the reinforced cage 200 are trapezoidal (Figs. 5 (b), 6 (b) and 7). (b)).
  • the donut-shaped hollow forming body 100 of FIG. 2 is restrained in the reinforced cage 200.
  • the hollow body 100 should be provided such that fitting grooves 140a are formed on each of the opposite sides.
  • the hollow body 100 is constrained to the reinforcing cage 200, even when buoyancy acts on the hollow body 100 during the slab concrete 420 pouring process, the hollow body 100 is inclined toward each other.
  • Injury ( ⁇ ) is suppressed while being caught by the first and second side vent roots 210 and 220, whereby the hollow body 100 is stably embedded in the slab concrete 420 at a predetermined position.
  • the donut-shaped hollow body 100 of FIG. 2 is an example in which fitting grooves 140a of both sides are provided in the same manner as the first and second inclined portions 211 and 221 of the first and second side vents, respectively.
  • the donut-shaped hollow body 100 of FIG. 3 is provided with an X-shape in which fitting grooves 140a at both sides of the donut-shaped hollow body 100 coincide with the arrangement state of the first and second inclined portions 211 and 221 of the first and second side vents.
  • the donut-shaped hollow body 100 of FIG. 3 is advantageous because there is no restriction in the installation direction. In other words, the donut-shaped hollow body 100 of FIG.
  • the donut-shaped hollow body 100 of FIG. 3 is limited in the installation direction because the shape of the first and second inclined portions 211 and 221 of the first and second side vents is shown in both fitting grooves 140a. There is no
  • FIGS. 8 and 9 show the process of constructing the two-way hollow slab and the completed two-way hollow slab using the reinforcing cage of FIG. 7, respectively, and the reinforcing cage 200 of FIGS. Apply.
  • the two-way hollow slab first crosses the main rod 411 and the reinforcement rod 412 with the slab lower reinforcing bars, and then the reinforcing cage 200 in the state where the donut-shaped hollow body 100 is constrained therein. It is disposed on the reinforcing bars (411, 412), and then cross-strengthening the reinforcement bar 413 and the main bar (414) with the slab upper reinforcement on the reinforcing bar cage 200 is constructed by the process of pouring the slab concrete 420 .
  • the reinforcing cage 200 may be fixed to the slab lower reinforcing bars (411, 412) by binding with a binding line.
  • the reinforcing cage 200 also serves as a spacer for maintaining a constant reinforcement position of the upper slab reinforcement (413, 414).
  • 10 and 11 are examples of the reinforced cage 200 using the horizontal bar as an example, and include examples of the reinforced bars of the upper and lower bar slabs.
  • the first and second lower horizontal muscles 251 and 252 are disposed parallel to each other, and the first and second upper horizontal muscles 253 and 254 are positioned above the first and second lower horizontal muscles 251 and 252.
  • the first and second upper and lower horizontal roots 251, 252, 253, and 254 form a trapezoidal arrangement structure, in which the first and second upper and lower horizontal roots are arranged to be spaced apart from each other in a narrower width than the lower horizontal roots 251 and 252.
  • the first side tilt muscles 261 are installed to obliquely connect the first upper and lower horizontal roots 251 and 253 along the length direction of the first upper and lower horizontal roots 251 and 253, and the neighboring members The inclination directions are reversed and spaced apart.
  • the second side tilt root 262 is installed to be inclined to connect the second upper and lower horizontal roots 252 and 254 to each other along the longitudinal direction of the second upper and lower horizontal roots 252 and 254.
  • the tilt roots 261 are disposed to be opposite to the inclined direction and disposed to alternate with the first side tilt roots 261 at opposite positions.
  • the upper butyl root 263 is installed to connect the first and second upper horizontal roots 253 and 254 to be inclined with respect to each other along the longitudinal direction of the first and second upper horizontal roots 253 and 254, respectively.
  • the first and second side tilt roots 261 and 262 are installed to connect with each other.
  • the first short butt root 241 is installed to obliquely connect one end of the first upper horizontal root 253 and one end of the second lower horizontal root 252.
  • the second end butyl root 242 is inclined to connect the other end of the first upper horizontal muscle 253 and the other end of the second lower horizontal muscle 252 or the other end of the second upper horizontal muscle 254 and the
  • the first lower horizontal muscle 251 is installed to incline the other end.
  • the first and second upper and lower horizontal bars 251, 252, 253 and 254 are used as the backing bars 412 and 413 of the slab upper and lower bars.
  • Reinforcing cage 200 of Figure 10 can be seen that the overall appearance is similar to the reinforcing cage of Figures 5 to 7 described above.
  • the first and second upper and lower horizontal roots 251, 252, 253 and 254 correspond to the first, second and third horizontal parts 212, 222 and 232 of the first and second side vent roots and the upper vent root, respectively.
  • the first and second side tilt roots 261 and 263 correspond to the first and second inclined portions 211 and 221 of the first and second side vent roots, and the upper butt root 263 is the third slope of the upper vent root. This is because it has the same arrangement state as the unit 231. Accordingly, the hollow body 100 is restrained and installed in the same manner as the reinforced cage 200 of FIGS. 5 to 7 in the reinforced cage 200 of FIG. 10.
  • the first and second upper and lower horizontal bars 251, 252, 253, and 254 are further welded and assembled to the reinforced cage of FIG.
  • the first lower horizontal root 251 is installed to connect the first horizontal portion 212 located below the first side vent root 210 to each other, the second lower horizontal root 252 to the second side vent root
  • the first horizontal portion 212 is installed to connect the second horizontal portion 222 located at the lower portion of the 220, and the upper portion of the first side vent root 210 with the first upper horizontal root 253.
  • the third horizontal part 232 positioned at one side of the upper vent root 230 to be connected to each other, and the upper part of the second side horizontal root 254 as the upper horizontal root 254.
  • the second horizontal portion 222 positioned and the third horizontal portion 232 positioned on the other side of the upper vent root 230 are installed to be connected to each other. Since the first and second upper and lower horizontal muscles 251, 252, 253 and 254 are used as the back muscles 412 and 413 of the slab upper and lower rebars, the reinforced cage 200 of FIG. 11 is the reinforced cage of FIG. It can be seen that the back beams 412 and 413 of the slab upper and lower rebars are joined to the 200 in advance.
  • both ends of the first and second upper and lower horizontal muscles 251, 252, 253, and 254 extend horizontally more than other portions, while the one end of the reinforced cage 200 using the horizontal muscle extends. It is preferable to provide a bent form, which takes into account that the first, second upper and lower horizontal muscles 251, 252, 253, 254 overlap when the reinforcing cage 200 is continuously arranged in series.
  • FIG. 12 and 13 illustrate a process of constructing a two-way hollow slab using the reinforcing cage 200 of FIG. 11 and a cross section of the completed two-way hollow slab.
  • the reinforcing cage 200 of FIG. 10 is also applied in the same manner. do. Since the reinforcing cage 200 of FIG. 11 has a form in which the first and second upper and lower horizontal muscles 251, 252, 253, and 254 are further provided in the reinforcing cage 200 of FIG. 7, the reinforcing cage 200 of FIG. 11 is provided. ), The process of reinforcing the reinforcement muscles 412 and 413 in the slab upper and lower reinforcement process can be omitted.
  • the reinforced spacer 200 proposed for fixing the position of the hollow body 100 in FIGS. 14 to 16 is a hollow body between the hollow body 100 and the reinforcing bars 412 and 413 of the slab upper and lower bars. It has a structure which is attached to each of the 100 and the back muscles (412, 413).
  • the reinforcement spacer 300 includes: a reinforcing bar binding piece 310 provided to weld or fit with the reinforcing bar 412 and 413; and a protruding protrusion 320 provided to fit with the hollow forming body 100; It is composed.
  • FIG. 14 shows an example of rebar spacer 300 utilizing rebar.
  • the rebar spacer 300 of FIG. 14 continuously provides bending of the reinforcing bar to provide the U-shaped protruding protrusion 320 in the center and horizontal reinforcing bar binding pieces 310 at both ends to provide the reinforcing bar binding piece 310 to the back muscle 412. And 413 for welding.
  • Rebar spacer 300 of Figure 15 is an example of a reinforcement spacer 300 manufactured by plastic injection molding.
  • Rebar spacer 300 of Figure 15 has been conventionally used conventionally, by providing a reinforcing bar binding piece 310 in the form of elasticity and by providing an elastic protrusion 320 in a trapezoidal form beneath the reinforcing bar binding piece ( It is used in such a manner that the power roots 412 and 413 are fitted to 310.
  • the donut-shaped hollow forming body 100 of FIG. 3 is bound to the reinforcing spacer 300.
  • the hollow body 100 should be provided such that fitting grooves 140b and 140c are formed on the upper and lower surfaces thereof facing each other. 140b and 140c should have a shape corresponding to the protruding protrusion 320 of the reinforcing spacer.
  • the hollow forming member 100 is reinforced reinforcing piece 310 of the reinforcing spacer. Flotation is suppressed by the weight of the upper reinforcement muscle 413 bound to the above, whereby the hollow body 100 is stably embedded in the slab concrete 420 at a predetermined position.
  • the two-way hollow slab completed using the reinforcement spacer 300 is as shown in FIG.

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Abstract

La présente invention concerne une dalle à noyau creux bidirectionnelle de faible poids, et un corps à noyau creux de forme annulaire qui peut être utilisé de façon avantageuse dans la construction d'une dalle à noyau creux bidirectionnelle. Le corps à noyau creux de forme annulaire selon la présente invention comprend une peau externe entièrement formée sous une forme annulaire, une partie creuse avec une section circulaire étant formée au centre d'un corps plein et des coins étant arrondis avec des surfaces incurvées. La dalle à noyau creux bidirectionnelle selon la présente invention est finie par positionnement de façon stable du corps à noyau creux de forme annulaire dans la dalle en béton, de telle sorte que le corps à noyau creux de forme annulaire est restreint et monté dans des cages de renfort en acier ou sur les renforts en acier supérieur et inférieur de la dalle.
PCT/KR2010/007237 2009-10-22 2010-10-21 Corps à noyau creux de forme annulaire, dalle à noyau creux bidirectionnelle l'utilisant, et leur procédé de construction WO2011049387A2 (fr)

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US13/581,597 US20130036693A1 (en) 2009-10-22 2010-10-21 Doughtnut-shaped hollow core body, bidirectional hollow core slab using the same, and construction method thereof
SG2012061750A SG185352A1 (en) 2009-10-22 2010-10-21 Doughnut-shaped hollow core body, bidirectional hollow core slab using the same, and construction method thereof

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KR10-2009-0100700 2009-10-22
KR1020090100700A KR101076407B1 (ko) 2009-10-22 2009-10-22 도넛형 중공형성체와 이를 이용한 2방향 중공슬래브와 그 시공방법

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KR101076407B1 (ko) 2011-10-25
US20130036693A1 (en) 2013-02-14

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